if you haven't played the demo of ico previously then i'd argue that it's still worthwhile even if you've played the full game. i blasted through the demo myself last night just for a giggle. it has a few of the rooms from the full game, but simplified a bit and linked together nicely. i absolutly love the windmill bit, and imho it plays nicer on the demo than the game as the puzzle element is simplified so you can just absorb the love a little more.